earth science
physics
life science
chemistry
random
100

a plant or animal species that is no longer living 

what is extinct

100

_____ is a push or a pull

force 

100

smallest unit of structure of all living things

what is a cell?

100

when a gas changes to a liquid 

what is condensation?

100

which weighs more: a ton of bricks or a ton of feathers?

they weigh the same
200

which gas do plants release through photosynthesis 

oxygen 

200

stored energy that an object has because of its position or condition

potential energy

200

living things that make their own food (ex: plants)

producers

200

the 3 states of matter

what is solid, liquid, gas

200

how old is the earth 

4.5 billion years 

300

preserved remains or traces of living things in rock

what are fossils?

300

the man who "discovered" gravity

isaac newton

300

organelle that stores DNA 

nucleus

300

the first element on the peridoic table

hydrogen 

300

what was the first animal in space

a fruit fly

400
which gas is most abundant in earth's atmosphere
nitrogen
400

you can measure ____ by dividing distance over time

speed

400

organisms that break down dead plants and animals (ex: worms, bacteria)

decomposers

400

the charge of a proton

positive

400

how many bones are in the adult human body 

206 

500

green pigment that plants use to make food 

chlorophyll

500
Newton's First Law of Motion

An object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by another force (inertia)

500

what does DNA stand for 

deoxyribonucleic acid 

500

what is measued by the pH scale

acidity

500

what organism produces 50-80% of earth's oxygen 

phytoplankton